Hillman 3 in. Black & Silver Reflective Mylar Sticker Wide Style Letter Y is designed to meet US Coast Guard and 911 requirements for boat registration posting, making it an i choice for safety and compliance. This three-inch reflective letter is for use on boats, houses, mailboxes, mailbox posts, and jet skis, providing clear and visible identification. Its black and silver reflective mylar material ensures durability and high visibility in various lighting conditions, enhancing safety and recognition. Whether you need to mark your property or watercraft, this sticker combines functionality with easy application for long-lasting use. Model Number: